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Fixes related to handling of autowires and upto-ranges, fixes #814 

Signed-off-by: Clifford Wolf <clifford@clifford.at>
This commit is contained in:
Clifford Wolf 2019-02-21 18:40:11 +01:00
parent 974927adcf
commit 23148ffae1
2 changed files with 12 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
frontends/ast/genrtlil.cc
View File

@ -644,7 +644,7 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint, bool *foun
while (right_at_zero_ast->simplify(true, true, false, 1, -1, false, false)) { }
if (left_at_zero_ast->type != AST_CONSTANT || right_at_zero_ast->type != AST_CONSTANT)
log_file_error(filename, linenum, "Unsupported expression on dynamic range select on signal `%s'!\n", str.c_str());
this_width = left_at_zero_ast->integer - right_at_zero_ast->integer + 1;
this_width = abs(int(left_at_zero_ast->integer - right_at_zero_ast->integer)) + 1;
delete left_at_zero_ast;
delete right_at_zero_ast;
} else
@ -1034,7 +1034,7 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
while (right_at_zero_ast->simplify(true, true, false, 1, -1, false, false)) { }
if (left_at_zero_ast->type != AST_CONSTANT || right_at_zero_ast->type != AST_CONSTANT)
log_file_error(filename, linenum, "Unsupported expression on dynamic range select on signal `%s'!\n", str.c_str());
int width = left_at_zero_ast->integer - right_at_zero_ast->integer + 1;
int width = abs(int(left_at_zero_ast->integer - right_at_zero_ast->integer)) + 1;
AstNode *fake_ast = new AstNode(AST_NONE, clone(), children[0]->children.size() >= 2 ?
children[0]->children[1]->clone() : children[0]->children[0]->clone());
fake_ast->children[0]->delete_children();

17
frontends/ast/simplify.cc
View File

@ -934,12 +934,15 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
}
}
if (current_scope.count(str) == 0) {
// log_warning("Creating auto-wire `%s' in module `%s'.\n", str.c_str(), current_ast_mod->str.c_str());
AstNode *auto_wire = new AstNode(AST_AUTOWIRE);
auto_wire->str = str;
current_ast_mod->children.push_back(auto_wire);
current_scope[str] = auto_wire;
did_something = true;
if (flag_autowire) {
AstNode *auto_wire = new AstNode(AST_AUTOWIRE);
auto_wire->str = str;
current_ast_mod->children.push_back(auto_wire);
current_scope[str] = auto_wire;
did_something = true;
} else {
log_file_error(filename, linenum, "Identifier `%s' is implicitly declared and `default_nettype is set to none.\n", str.c_str());
}
}
if (id2ast != current_scope[str]) {
id2ast = current_scope[str];
@ -1689,7 +1692,7 @@ skip_dynamic_range_lvalue_expansion:;
while (right_at_zero_ast->simplify(true, true, false, 1, -1, false, false)) { }
if (left_at_zero_ast->type != AST_CONSTANT || right_at_zero_ast->type != AST_CONSTANT)
log_file_error(filename, linenum, "Unsupported expression on dynamic range select on signal `%s'!\n", str.c_str());
int width = left_at_zero_ast->integer - right_at_zero_ast->integer + 1;
int width = abs(int(left_at_zero_ast->integer - right_at_zero_ast->integer)) + 1;
assign_data = new AstNode(AST_ASSIGN_LE, new AstNode(AST_IDENTIFIER),
new AstNode(AST_SHIFT_LEFT, children[1]->clone(), offset_ast->clone()));